DE102008007432A1 - Spin-stabilized projectile, has mass element locked with stop element in prestressed position to form nose-lateral stop for mass element, so that spring force of spring moves mass element from drilling while decreasing acceleration - Google Patents

Abstract

The projectile (1) has guide vanes (10) foldable by centrifugal forces, and exhibiting a guiding holder (11) to guide a mass element (20) that is intervened into a retaining drilling (3). The element is locked with a nose-lateral stop element (27) in prestressed position to form a nose-lateral stop for the mass element, so that projectile acceleration pushes the mass element into the drilling against force of a spring (25) during firing, the stop element is balanced and released, and spring force of the spring moves the mass element from the drilling while decreasing the acceleration.

Description

The The invention relates to a spin-stabilized projectile with guide vanes. The guide wings can be at the bow, in the middle or be arranged at the rear of the projectile. The invention equally covers the Both alternatives, where on the one hand the guide vanes on a spin-decoupled projectile part or on a non-spin decoupled Geschossteil are arranged. In the case of a spin decoupled bullet a generator for generating electricity can be interposed. ever after application, the guide vanes can be crossed or twisted or exactly in the longitudinal direction of the projectile.

To the Unfolding the baffles, various concepts are known.

The DE 37 21 512 C1 shows the bullet, which is spin stabilized and has centrifugal forces deployable guide vanes. Each guide wing has a folding hinge, via which it is articulated on the projectile. The guide vanes are positively locked in a folded position with a central punch. The punch is biased by a spring and secured in the biased position with a shear pin. The high acceleration forces acting on the punch shear off the shear pin. As long as the acceleration forces act, the punch locks the guide vanes. When the acceleration forces cease to be effective, the force of the spring pushes the punch out of its positive engagement with the vanes, allowing the vanes to fold out.

The DE 10 2005 035 829 B4 shows a further projectile, which is spin stabilized and has centrifugal forces deployable guide vanes. Here, too, each guide wing has a folding joint, via which it is articulated on the projectile. The guide vanes are arranged at the rear, which is swirl-decoupled. All guide vanes are locked in a closed position with a pot form-fitting, the rear side forms the conclusion of the projectile. The pot serves to secure the guide vanes in the folded position and to release it in a timely manner after leaving the launching tube. One uses the forces of the propellant gases, so that the pot retains the positive locking, while the projectile passes through the tube. Furthermore, a free space in the rear serves to store high pressure propellant gases in order to move the pot. This allows the vanes to open when the bullet leaves the pipe.

Of the The invention is therefore based on the object, a projectile, the spin-stabilized is and by centrifugal forces folding guide wings has, so educate, that on a simple and reliable Way and as an alternative to the aforementioned solutions is achieved that the guide vanes also accurate open after leaving the projectile tube.

These The object is achieved by the features of claim 1 solved.

The Advantages of the invention are that the locking of the Guide vanes with simple and inexpensive means he follows. Each guide wing has a hinged hinge, over that it is hinged on the floor. Each guide wing points Further, a guide holder, in which a mass element is guided. The mass element engages in the transport position forming a positive connection at the rear in a retaining hole a, which is arranged in the projectile shell. The mass element is biased by a spring and in the preloaded position locked with a stop element that a bow-side stop forms for the mass element. To summarize, are to Lock only one guide bracket, the part of the guide wing is a mass element with a spring, and a releasable stop element required as components, which are all simple in construction and manufacturing. At the launch the projectile acceleration presses against the mass element the spring force deeper into the retaining hole of the projectile casing into it. The acceleration force, that is mass of the mass element times the bullet acceleration, so is higher than the spring biasing force. Characterized in that the mass element moves deeper into the retaining hole, the form-fit still strengthens. The guide wings so can not open. That into the retaining hole moving mass element relieves the bow-side stop element. As a result, it dissolves and can, for example, by the Centrifugal forces are thrown off. After the projectile leaves the gun barrel, the power of the spring can return to Come true, which is then higher than the acceleration force. Because when the bullet acceleration decreases, the spring force moves the spring the mass element out of the holding hole out. Thereby the guide wing is unlocked and works through the centrifugal forces on.

According to one Embodiment of the invention includes the guide holder in the retracted position flush with the projectile jacket from. By the flush completion are none sharp, disturbing edges in front.

According to a further embodiment of the invention, the stop element is a pin, which is held in the folded position in a bore of the guide holder and can be herausgetretbar by centrifugal forces after a discharge to the outside. A pen is a low-cost component. The Ausnut The centrifugal force means that no additional energy is needed to exit the pen.

According to one Another embodiment of the invention forms each guide vanes a circle section. A guide wing in the form of a circle section can be accommodated well within the storey.

According to one Another embodiment of the invention is the hinged joint in the Center of the circle arranged, from which the circle section is formed. Furthermore, the pivoting range of the guide vane 180 °. This achieves that the aerodynamically effective Area is high and the accommodation of the folded Leitblügels only little space needed.

The The invention will be described below with reference to an illustrated in the drawings Bullet described in more detail. This show in the form of Principle sketches:

1 a projectile in the flying position with folding guide wings, in perspective in section;

2 a single wing of the in 1 shown projectile in the transport position, in the front view in section along the guide wing;

2a an illustration of the transport position;

3 the guide vane in the in-tube acceleration position;

3a an illustration of the in-pipe acceleration position;

4 the guide vane in the short-to-exit position;

4a an illustration of the short-after-absence position;

5 the guide wing in the flying position;

5a an illustration of flying position.

The 1 illustrates a spin-stabilized projectile 1 with fold-out wings 10 , which are hinged by centrifugal forces. The guide wings 10 are according to the illustrated embodiment on a spin decoupled missile tail 8th arranged. A generator 5 is to power generation is interposed. The guide wings 10 are arranged twisted or twisted. This is intended to set a low speed difference between the bullet tail and the rapidly rotating, remaining floor to generate electricity with the help of the generator can. In deviation from the illustrated embodiment, the guide vanes 10 be installed in all other spin-stabilized bullet types.

The Way of locking the baffles will be on hand the illustrated sequence starting with the transport position to explained to the flying position.

The 2 shows a guide wing 10 in the transport position of the projectile 1 , The 2a Illustrates the transport position and shows a box of wrapped bullets 1 , whose guide vanes are folded.

• • eine Führungshalterung 11, die Teil des Leitflügels 10 ist,
• • ein Masseelement 20 mit einer Feder 25, und
• • ein lösbares Anschlagelement 27.

Every guide wing 10 initially has a hinged hinge 13 on top of it on the floor 1 is articulated. Every guide wing 10 also has a guide bracket 11 on, in which a mass element 20 is guided. The mass element 20 engages, as shown, to form a positive connection at the rear in a retaining hole 3 one in the projectile shell of the projectile 1 is arranged. The mass element 20 is with a spring 25 biased. This biased position is with a stop element 27 locked, which is a bow-side stop for the mass element 20 forms. The stop element 27 is a simple pin that is in a hole 12 the guide bracket 11 is held. Consequently, the lock serve:

• • a guide bracket 11 , the part of the guide wing 10 is
• • a mass element 20 with a spring 25 , and
• • a releasable stop element 27 ,

As shown, the guide bracket closes 11 flush with the projectile shell of the projectile 1 from. Due to the flush closing there are no sharp, disturbing edges.

The further procedure shows the 3 , Shown is the in-tube acceleration position. The 3a illustrates this and shows the bullet while accelerating inside the gun barrel 30 ,

At launch, projectile acceleration pushes the mass element 20 against the spring force deeper into the retaining hole 3 the projectile shell of the projectile 1 into it. The acceleration force, that is mass of the mass element 20 times the bullet acceleration, so is higher than the spring biasing force. Because of that the mass element 20 deeper into the retaining hole 3 moved in, the form-fit still reinforced. The guide wings 10 so can not open. That in the retaining hole 3 moving mass element 20 relieves the bow-side stop element 27 , This will solve it. The stop element 27 is a pin that is now loose of the hole 12 the guide bracket is located.

The following step shows the 4 , Shown is the short-to-exit position. The 4a illustrate this and show the projectile immediately after the gun barrel 30 leaves.

After leaving the barrel, the stop element 27 in the form of the pin by centrifugal forces from the bore 12 thrown outwards into the open air. Furthermore, after leaving the gun barrel, the force of the spring 25 reappear, which is then higher than the acceleration force. Because when the bullet acceleration decreases, the spring force of the spring moves 25 the mass element 25 from the retaining hole 3 out. This will be the guide wing 10 unlocked. Because the focus 14 , like in the 4 can be seen, in front of the pivot point of the fold-out joint 13 is due to the centrifugal acceleration, a torque that forms the guide vanes 10 folds out of its current position and turns into the flow. Every guide wing 10 forms a circle section. The hinged joint 13 is arranged in the center of the circle from which the circular section is formed, and the pivoting region of the guide vane 10 is 180 °. Due to this design, the aerodynamically effective area is high and the accommodation of the folded-in guide wing 10 only needs a little space.

This last step shows the 5 , Shown is the flying position, the 5a illustrated.

1

bullet

3

retaining hole

5

generator

8th

spin-decoupled floor part

10

vanes

11

guide support

12

drilling in the guide holder for stop element

13

Ausklappgelenk

14

main emphasis

20

mass element

25

feather

27

stop element

30

barrel

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 3721512 C1 [0003]
• - DE 102005035829 B4 [0004]

Claims (5)

Bullet ( 1 ), having the following characteristics: the projectile ( 1 ) is spin stabilized and has centrifugal forces folding guide wings ( 10 ) on, each guide wing ( 10 ) has a hinged joint ( 13 ) on which it is on the floor ( 1 ), each guide wing ( 10 ) further comprises a guide holder ( 11 ), in which a mass element ( 20 ), the mass element ( 20 ) engages in the transport position to form a positive connection at the rear in a retaining hole ( 3 ), which in the projectile shell ( 2 ) of the projectile, the mass element ( 20 ) is with a spring ( 25 ) and in the prestressed position with a stop element ( 27 ), which is a bow-side stop for the mass element ( 20 ) is designed in such a way that, when fired, the projectile acceleration is the mass element ( 20 ) against the force of the spring ( 25 ) deeper into the holding hole ( 3 ), • the bow-side stop element ( 27 ) is relieved and is released, and • when the bullet acceleration accelerates, the spring force of the spring ( 25 ) the mass element ( 20 ) from the retaining hole ( 3 ) and thereby the guide wing ( 10 ) unlocked. Bullet ( 1 ) according to claim 1, wherein the guide holder ( 11 ) in the folded position flush with the projectile casing. Bullet ( 1 ) according to claim 1 or 2, wherein the stop element ( 27 ) is a pin which in the folded position in a bore ( 12 ) of the guide holder ( 11 ) is supported by centrifugal forces and after a discharge to the outside heraustretbar. Bullet ( 1 ) according to one of claims 1 to 3, in which each guide wing ( 10 ) forms a circle section. Bullet ( 1 ) according to claim 4, wherein the hinged joint ( 13 ) is arranged in the middle of the circle from which the circular section is formed, and the pivoting range of the guide vane is 180 °.